the half-life of radium-226 is about 1,590 years. How much of a 100mg sample will be left in 500 years

Answers

Answer 1

Aa Bb Cc Dd Ee Ff Gg Hh Ii Jj Kk Ll Mm Nn Oo Pp Qq Rr Ss Tt Uu Vv Ww Xx Yy Zz

I know the best answer ever (*says sarcastically*)


Related Questions

can you Evaluate 2. pls anyone

Answers

Answer:

no

Step-by-step explanation:

2 is just 2

150 pounds to 135 pounds

Answers

Answer:

15 pounds

Step-by-step explanation:

150-135

Answer:

15 pounds

Step-by-step explanation:

You're baking a batch of 12 cupcakes. Each batch requires 100 grams of butter. Which proportion shows how much butter there is in each cupcake?

Answers

Answer: .12 grams of butter per cupcake

Step-by-step explanation:

1/12=x/100 this is what i found but this may or may not be the right answer but I am pretty sure that it is. Sorry if this doesn't help.

IM SO DUMB PLS HELP ME I THINK THIS IS ALGEBRA I DONT KNOW??

Answers

Answer:

#1  350 trees

#2  10 people  

Step-by-step explanation:


The pottery store can make 176 coffee mugs in an 8 hour day. How many mugs can they make in one hour
Watch your units!

Answers

Answer:

22 per hour

Step-by-step explanation:

8 divided by 176 lol Hope I did it right tho ;-;

Answer:

they can make 22 in one hour.

Below are the test scores of nine students on the math test:

50, 50, 50, 50, 51, 89, 90, 90, 90

What is the mean absolute deviation of the test scores? (round to the nearest thousandth)

Answers

Answer:

The mean absolute deviation is 19.5

Step-by-step explanation:

Hope this helps!

Solve for x. Enter the solutions from least to greatest.
(x + 7)^2 - 49 = 0

Answers

Answer:

x = -14, 0

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDASEquality Properties

Algebra I

Completing the SquareMultiple Roots/Solutions

Step-by-step explanation:

Step 1: Define

(x + 7)² - 49 = 0

Step 2: Solve for x

Add 49 to both sides:                    (x + 7)² = 49Square root both sides:                 x + 7 = ±7Subtract 7 on both sides:               x = -7 ± 7Evaluate:                                         x = -14, 0

Step 3: Check

Plug in x values into original equation to verify they are a solution.

x = -14

Substitute in x:                    (-14 + 7)² - 49 = 0Add:                                     (-7)² - 49 = 0Exponents:                          49 - 49 = 0Subtract:                              0 = 0

Here we see that 0 does indeed equal 0.

∴ x = -14 is a solution of the equation

x = 0

Substitute in x:                    (0 + 7)² - 49 = 0Add:                                     7² - 49 = 0Exponents:                          49 - 49 = 0Subtract:                              0 = 0

Here we see that 0 does indeed equal 0.

∴ x = 0 is also a solution of the equation.

Answer:

Lesser x=-14 Greater x=0

Step-by-step explanation:

x+7)  

2

−49

(x+7)  

2

 

(x+7)  

2

 

​  

 

​  

 

=0

=49

=  

49

​  

 

​  

 

Hint #22 / 3

\begin{aligned} x+7&=\pm7 \\\\ x&=\pm7-7 \\ \phantom{(x + 7)^2 - 49}& \\ x=-14&\text{ or }x=0 \end{aligned}  

x+7

x

(x+7)  

2

−49

x=−14

​  

 

=±7

=±7−7

or x=0

​  

Please help me ASAP
How many pavers are needed to cover the patio?

Answers

Answer:

270

Step-by-step explanation:

✔️Area of the Patio = bh

b = 12 ft = 144 in.

h = 10 ft = 120 in.

Area of Patio = 144*120 = 17,280 in.²

✔️Area of Brick Paver = bh

b = 8 in

h = 8 in

Area of the Brick Paver = 8*8 = 64 in.²

The number of quaver needed to cover the Patio = area of Patio ÷ area of one brick quaver

= 17,280/64 = 270

Ryan has a checking account balance of -$25. Write an absolute value statement to show how much money Ryan owes the bank.

Answers

Absolute value equations are x^2 + x + n(number) so
My best guess is x^2 + x - 25
I’m sorry if I’m wrong

eye blue like the Atlantic and im going down like the Titanic​

Answers

Answer:

how is this a question

Step-by-step explanation:

Answer:hvcfhcxfdhkhfhxkzi love that song:o :D Have a great day!!

I need help!

Which of the following has a graph that is a straight line?

a. y^2 = x - 1
b. y = 2x^2 + 4
c. y = 2x + 7
d. y = 3x^3

Answers

C is your answer......

plz answer it as fast as you can​

Answers

Answer:JL=MO

Source:trust me bro

The population of a town is 8,000, and it grows at a rate of 4.6% per year. What will the population be in 10 years?

Answers

Answer:

11680

Step-by-step explanation:

4.6% of 8000 is 368

368 x 10 = 3680

3680 + 8000= 11680

A box contains 2 purple marbles, 2 blue marbles, 3 green marbles, and 5 red marbles. What is the probability of picking a green marble?

Answers

Answer:

0.25

Step-by-step explanation:

The total number of marbles is 2 + 2 + 3+ 5 = 12

the number of green ones is 3

So the probability of green = 3/12 = 1/4 = 0.25

Answer:

Red

Step-by-step explanation:

Because it was most pick the first time

In triangle ABC, angle A is 35 and angle b is 20 select all triangle which are similar to triangle ABC.

Answers

Answer:

The similar one are 1 and 5

A. Triangle DEF where ∠D is 35° and ∠E is 20°.

C. Triangle JKL where ∠J is 35° and ∠L is 125°.

D. Triangle MNO where ∠N is 20° and ∠O is 125°.

What is a triangle?

A triangle is a three-sided closed-plane figure formed by joining three noncolinear points. Based on the side property triangles are of three types they are Equilateral triangle, Scalene triangle, and Isosceles triangle.

We know the sum of all the interior angles of a triangle is equal to 180°.

Given, A triangle ABC has ∠A = 35° and ∠B = 20°.

∴ ∠C = 180° - 35° - 20°.

∠C = 125°.

Triangle will be similar if every corresponding angle of different triangles has the same measure.

So, Triangles that are similar to triangle ABC is triangle DEF where ∠D is 35° and ∠E is 20°.

Triangle JKL where ∠J is 35° and ∠L is 125°.

Triangle MNO where ∠N is 20° and ∠O is 125°.

learn more about triangles here :

https://brainly.com/question/2773823

#SPJ2

1. if $2,500 is invested into an account that pays 4% interest compounded monthly how long will it take for the investment to double?

2. find the average rate of change of f(x)= x^2 +2x+1 evaluated at x=1+a and x=1​

Answers

Answer:

SORRYYYYYYY!!!!!!!!!!!

State 2 possible solution points for the inequality. Use the form (x,y) for both points. *
4 points
Captionless Image

Answers

Solution set of inequality-7<3x+2<11, where x is a real number

Which Shape is NOT quadrilateral

Answers

Answer:

the pentagon (3rd one)

Step-by-step explanation:

definition of a quadrilateral literally means a shape with 4 sides

Simplify the following polynomial expression (8x^2-7x+2)+(3x^2-9x-6) help fasttt!!!!!!!!!!!!!

Answers

Answer:

11x^2 - 16x +4

Step-by-step explanation:

In order to simplify, add like terms

(8x^2-7x+2)+(3x^2-9x-6)

8x^2 + 3x^2 = 11x^2

-7x + -9x = -16x

-6 + 2 = 4

now the equation is 11x^2 - 16x +4


If two lines are perpendicular, their slopes are negative reciprocals.
A. True
B.False

Answers

A. If the slopes of two lines are negative then the reciprocals, of the lines are perpendicular.
THE ANSWER IS TRUE I’M 100%

add then simplify if possible 1/2 + 2/5

Answers

Answer:

9/10 and it can't be simplified

Step-by-step explanation:

BRAINLIEST PLEASE  

Answer:

9/10

Step-by-step explanation:

1/2 = 5/10

2/5 = 4/10

5/10+4/10= 9/10

A ball is thrown from a height of 130 feet with an initial downward velocity of 6ft/s. The ball's height h (in feet) after t seconds is given by the following.
h=130-6t-16t^2
How long after the ball is thrown does it hit the ground?

Answers

See attachment for math work.

Find a formula for the general term or of the sequence assuming the pattern of the first few terms
continues.
{14, 19, 24, 29, 34, ...}
Assume the first term is a1.
an=?

Answers

Answer:5n+6

Step-by-step explanation :an=a1+d(n-1)

=1+(-5)(n-1) or 1+-5n+5

an=-5n+6

write an equation that reflects this relationship using X to represent the amount of grams in fish and y to represent the number of calories

Answers

Answer:

[tex] y = \frac{3}{2}x [/tex]

Step-by-step explanation:

The graph shows there is a proportional relationship between amount of grams of fish (x) and number of calories (y).

A original relationship can be represented by An equation as [tex] y = kx [/tex], where, k = constant of proportionality (y/x).

The constant of proportionality using any point, let's say (200, 300), would be:

k = y/x = 300/200 = ³/2

Plug in the value of k into [tex] y = kx [/tex].

Thus, the equation that reflects the relationship would be:

[tex] y = \frac{3}{2}x [/tex]

The equation that reflects this relationship using x to represent the amount of fish in grams and y to represent the number of calories is (2y = 3x) and this can be determined by using the point-slope form of a line.

Given :

A graph where the x-axis represents the number of fish in grams and the y-axis represents the number of calories.Points - (100,150) and (200,300)

The point-slope form can be used to determine the equation that reflects this relationship using x to represent the amount of fish in grams and y to represent the number of calories.

The point-slope form is given by the equation:

[tex]\dfrac{y-y_1}{x-x_1}=\dfrac{y_2-y_1}{x_2-x_1}[/tex]     ----- (1)

where [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] are the points on the line.

Now, put the values of [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] in the equation (1).

[tex]\dfrac{y-150}{x-100}=\dfrac{300-150}{200-100}[/tex]

[tex]2(y-150)=3(x-100)[/tex]

2y - 300 = 3x - 300

2y - 3x = 0

2y = 3x

The equation that reflects this relationship using x to represent the amount of fish in grams and y to represent the number of calories is (2y = 3x).

For more information, refer to the link given below:

https://brainly.com/question/14022834

Please explain how to do it so I can learn it

Answers

It is D because it means supplementary angles which equal up to 180

Anybody can help me with this one?

Answers

The point would be (9,1)

Answer:

look pic

Step-by-step explanation:

the -1/4 is the slope and 5 is where you start

HELP^^^ ITS 7TH GRADE MATH

Answers

Answer:

13

Step-by-step explanation:

count outside lines

Answer:

Perimeter: 13

Don’t understand pls help

Answers

Answer:

-1.5x + 3

Step-by-step explanation:

The Y-intercept is visible, wherever the line is touching the Y-Axes is the intercept. Use this formula to solve for slope:

A salesperson at a jewelry store earns 3% commission each week. Last week, Heidi sold $750
worth of jewelry. How much did she make in commission? How much did the jewelry store make
from her sales?
Heidi earned $ in commission.

Answers

She made $22.5 of commission

Helpp me please find the angle (where the question mark is ) 10 pointsss

Answers

Answer:

#9= 100 degrees but I'm not sure about #10.

Step-by-step explanation:

We know that a triangle has a total of 180 degrees.

So we add 16, 34, and 30

16+34+30=80

Then we subtract the amount from the total degrees of a triangle.

180-80

= 100 degrees

I hope this helps:)

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